MySQL powers millions of web applications — and getting the schema right from the start saves months of painful migrations later. ER Flow is a visual database design tool purpose-built for MySQL developers who want to model their entire schema before writing a single query.
Define tables with MySQL-specific column types: VARCHAR, TINYINT, BIGINT UNSIGNED, DECIMAL, ENUM, TEXT, DATETIME, and JSON. Set column defaults, enforce NOT NULL constraints, and configure AUTO_INCREMENT primary keys — all through a clean visual interface. ER Flow renders your schema as an interactive ER diagram so you can see every relationship at a glance.
ER Flow's MCP Server bridges the gap between your AI coding assistant and your MySQL schema. Connect Cursor or Windsurf and describe your data model in natural language — the AI creates tables, draws relationships, and generates a migration file you can run immediately. Combined with CRDT-powered real-time collaboration, ER Flow makes MySQL schema design a team sport.
Full support for VARCHAR, TEXT, INT, BIGINT UNSIGNED, DECIMAL, ENUM, SET, DATETIME, TIMESTAMP, and JSON. Define column lengths, precision, and scale directly on the canvas.
Connect any MCP-compatible AI assistant to ER Flow. Describe your MySQL application — users, products, orders — and the AI scaffolds the entire schema including foreign keys and indexes.
Multiple engineers can design the MySQL schema simultaneously. CRDT-based sync ensures changes merge automatically without conflicts or lost work.
Generate clean CREATE TABLE and ALTER TABLE SQL for MySQL. Export migration files and run them against your database, or use them as input for ORM migration tools.
Sign into ER Flow and create a new data model. Name it after your MySQL database or application.
Create tables with MySQL column types. Set primary keys, configure AUTO_INCREMENT, add NOT NULL constraints, and define default values.
Connect tables with foreign key relationships. ER Flow visualizes every one-to-many and many-to-many association on the canvas.
Generate a migration file for your MySQL schema. Download the SQL, run it against your database, and keep designing as your application evolves.
Free to get started. No credit card required.